completely agreed, but thats a hack of work. rating a review is of course not that difficult but calculating the meta rating from all the reviews including the individual ratings of the reviews is overkill.
on the other hand i dont see people going to vote for a review, even rating games is not very common bye the users of this site ^^http://www.lgdb.org/games/rating

i hope you are not especially fond of editing this entry? because i have no idea and if this is not happening again would like to leave it untouched. this said, the next step would be to check the database.